function input_focus(doc,change_id){
	ipass = "images/top/" + change_id + "_on.jpg"
	doc.getElementById(change_id).style.backgroundImage ="url(" + ipass + ")";
}
function input_blur(doc,change_id){
	ipass = "images/top/" + change_id + "_off.jpg"
	if(doc.getElementById(change_id).value==""){
		doc.getElementById(change_id).style.backgroundImage ="url(" + ipass + ")";
	}
}

function input_reset(doc,change_id){
	if(doc.getElementById(change_id).value==""){
		ipass = "images/top/" + change_id + "_off.jpg"
		doc.getElementById(change_id).style.backgroundImage ="url(" + ipass + ")";
	}
}